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Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts. If used in a car that gets 40 mpg, that would translate to around 43.5 mpg. Audi is testing a supplemental 48-volt electric system in two prototype vehicles – modified mild-hybrid versions of the A6 TDI and the RS 5 TDI – in order to add in more electric technology (an electric compressor, for example, to improve acceleration) and "convenience systems for dynamic chassis control." Audi says it has more applications in the pipeline, but the overall gist is that the German automaker sees 48 volts as an "important building block in electrification strategy." As you can see in the picture above (click to enlarge), the RS 5 TDI concept uses a li-ion battery installed in the back of the car and an alternator to provide 48 volts when the engine is off. Audi says that the 48-volt system can save up to 0.4 liters of fuel per 100 kilometers. To put that into US numbers, if used in a car that gets 40 miles per gallon today, that would translate into a bump up to around 43.5 mpg. The Advanced Lead Acid Battery Consortium (ALABC) is also working on a 48-volt system to improve fuel economy and we've got a deep dive of Audi's electric turbocharger here. Even more powerful and efficient – the new 48-volt technology from Audi Important building block in electrification strategy More voltage and more power for new technologies Scalable platform concept suitable for wide-ranging uses Ingolstadt, August 25, 2014 – Audi is to upgrade part of its vehicle electrical system from twelve to 48 volts. The move represents another technical building block for facilitating the integration of new automotive technologies while increasing the power and efficiency of its cars. "We are using the full bandwidth of electrification in our drive principles strategy. Running part of the vehicle electrical system at 48 volts plays a central role in this," commented Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "It enables us to make more energy available.

Here are all the EVs with 800V charging available in 2024

As technology advances, electric cars are improving their fast-charging times. That means less time spent waiting at a DC public charger when you’re out on the road. While Level 3 chargers used to provide a maximum of 150 kilowatts of power, 350-kW chargers are become more common, making for super-fast charging Â… if your car is capable of taking advantage of it. So how do automakers improve the charging speed of their EV batteries? Some are turning to higher voltage, specifically 800V charging. What's the difference between 800-volt charging and 400-volt charging? So how does 800V charging improve upon the more common 400V EVs? Put simply, the higher the voltage, the less amperage (current) it requires to charge. In other words, with more voltage, you get more wattage (power, aka charge rate) from the same amperage (current). 800V architecture is also more efficient, with less electrical resistance, so it can use thinner cables and smaller, lighter components while needing less cooling. The tradeoff is that it is more costly, and guess who that cost gets passed on to. While automakers don't break down their pricing to show how much more you're paying for that 800V system, you'll just have to evaluate any potential purchases as a whole, and make your decision based on overall pricing of the vehicle. Thankfully, the 800V EVs on sale now are generally ones we like. Now, 800V charging capability doesn't necessarily mean an EV has 800V vehicle architecture. For instance, the GMC Hummer EV and Chevy Silverado EV operate at 400V, but with their dual battery packs, can switch to 800V when charging by temporarily connecting those packs in series. Currently, there are only a handful of EVs available with 800V charging. But if you are going to find yourself taking longer trips in your EV and using DC fast chargers more often, you might want to consider choosing one with this faster charging capability. With that in mind, these are the EVs available with 800V charging, either on sale now or coming in 2024. 800-volt EVs available in 2024 Audi E-Tron GT Chevrolet Silverado EV Genesis GV60 Genesis Electrified G80 Genesis Electrified GV70 GMC Hummer EV Pickup GMC Hummer EV SUV GMC Sierra EV* Hyundai Ioniq 5 Hyundai Ioniq 6 Kia EV6 Kia EV9 Lotus Eletre* Lotus Emeya* Lucid Air Lucid Gravity* Porsche Macan Electric* Porsche Taycan Ram 1500 REV* Tesla Cybertruck *Coming later in 2024 Green Audi Chevrolet Genesis GMC Hyundai Kia Lotus Porsche Tesla Electric Lucid EV charging

Recharge Wrap-up: Nissan "religious" about zero-emissions, Tesla crashes at dealership, Formula E on-board video

Nissan is pretty darn serious about being king of the EV industry. Just see what Chief Planning Officer Andy Palmer has to say at the launch of the e-NV200: "When it comes to zero emissions, we're absolutely religious. We'll be the absolute, No. 1 leader in zero emissions. No doubt. That's our positioning." Bold words, to be sure. Toyota, on the other hand, ended its collaboration with Tesla (whom Nissan mustn't forget about in its quest to reign supreme in the EV world) to build the RAV4 EV, and will focus instead on hybrids and testing the waters with hydrogen cars. Says Jim Lentz, CEO of Toyota North America, "I would rather invest my dollars in fuel cell development than in another 2,500 EVs." Read more at Automotive News or Autoweek. To celebrate 25 years of TDI technology, Audi is releasing the A7 Sportback 3.0 TDI Competition special edition in Europe. The Competition uses Audi's biturbocharged, 3.0-liter diesel engine boosted to 326 horsepower, giving the car a 0-62 time of 5.1 seconds. It comes with the S line sport package and is offered in four exterior colors: Daytona Gray, Misano Red, Nardo Gray and Sepang Blue. The interior is black leather, with the option of Misano Red or Agate Gray contrast stitching. The Competition edition will go on sale in August starting at ˆ72,000 (about $97,700). Audi's first Turbocharged Direct Injection engine debuted at the 1989 Frankfurt Motor Show in the Audi 100 2.5 TDI. See the press release down below for more details. There was another Tesla Model S crash recently, this one at the Tesla Store. The driver apparently crashed the freshly purchased car into the Tesla sign before even making it off the lot. According to Reddit user s1lentway, who was at the Tesla Store in Fremont, California when it happened, "We believe this is someone who just got their car. They must have been driving it for less than a minute and lost control, crashing right into the sign missing the showroom glass windows only by a few inches." Wrecked Exotics suggests the driver hit the accelerator instead of the brake pedal. Probably the best comment in the Reddit post: "Edison strikes again." See the original post at Reddit for more corny jokes, speculation and similar stories from other users. Take a lap in a Formula E racecar. The video below offers up the sights and sounds of a hot, wet lap in the open-cockpit, all-electric Spark-Renault SRT_01E.